I guess if worst comes to worst, you could just make a new Pokémon with exactly the same stats just a different picture.
When you talk to an event, it takes out X and gives you Y...
There are probably some problems with that, but you can fix the Pokedex inflation (as in the problem of a higher pokedex count without actually adding a unique pokemon) by making the alternate pokemon have a pokedex number ("RegionalNumbers" in the pokemon.txt) of 0.
When you talk to an event, it takes out X and gives you Y...
There are probably some problems with that, but you can fix the Pokedex inflation (as in the problem of a higher pokedex count without actually adding a unique pokemon) by making the alternate pokemon have a pokedex number ("RegionalNumbers" in the pokemon.txt) of 0.